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EMC Dell XtremIO Design Achievement Sample Questions (Q53-Q58):

NEW QUESTION # 53
When using the XtremIO PoC Toolkit, what is the purpose of the Age phase?

A. Continuously write to a specific range of logical block addresses to test Flash durability
B. Test the performance of the All-Flash array with non-production static data
C. Overwrite each LUN multiple times to ensure they contain all unique data
D. Scatter writes across the entire array to simulate ordinary use of the system

Answer: C

Explanation:
The purpose of the Age phase in the XtremIO PoC (Proof of Concept) Toolkit is to overwrite each LUN (Logical Unit Number) multiple times to ensure that they contain all unique data.This process is crucial for simulating a real-world scenario where the storage array has been in use for some time, which allows for the evaluation of the performance and behavior of the All-Flash array under more typical conditions1.
References:
* The XtremIO PoC Toolkit documentation, which outlines the procedures and phases used during a proof of concept to evaluate the performance and capabilities of the XtremIO storage system1.
* Discussions and resources available on professional forums and communities that share insights into the use and stages of the XtremIO PoC Toolkit2.

NEW QUESTION # 54
What should the I/O size be set to in a VMware VDI solution utilizing VAAI XCOPY on XtremIO?

A. 256 kB
B. 16 kB
C. 4 MB
D. 256 MB

Answer: A

Explanation:
In a VMware VDI solution utilizing VAAI XCOPY on XtremIO, the I/O size should be set to 256 kB.This setting is recommended to optimize the performance of the storage array during XCOPY operations, which are used to offload the copying of data within the storage array to the array itself, freeing up host resources1.
References:
* The Dell support knowledge base article on using a VAAI claim rule to set the XCOPY size when using XtremIO for ESXi hosts recommends setting the XCOPY system value to 256 kB for XtremIO arrays1.
* Additional information on VAAI XCOPY and its configuration can be found in the "Introduction to XtremIO X2 Storage Array" document, which provides insights into the system features that support such operations2.

NEW QUESTION # 55
When creating XtremlO volumes for a host, which operating systems will benefit by changing the default logical block size for applications consisting of 4 KB I/Os?

A. RHEL and IBM AIX
B. Sun Solaris and HP-UX
C. Microsoft Windows and RHEL
D. VMware ESX and Microsoft Windows

Answer: D

Explanation:
When creating XtremIO volumes for a host, operating systems like Microsoft Windows and RHEL (Red Hat Enterprise Linux) will benefit from changing the default logical block size to better match applications that consist of 4 KB I/Os. This is because these operating systems are commonly used with applications that have a
4 KB I/O size, and aligning the logical block size with the application I/O size can improve performance by reducing the need for read-modify-write cycles.
For instance, in Windows environments, the NTFS file system often uses a default cluster size of 4 KB, which aligns well with a 4 KB logical block size.Similarly, for RHEL, the Ext4 file system can be configured with a
4 KB block size, which is a common setting for many Linux-based applications12.
References:
* Discussions on Dell Technologies community forums indicate that changing the logical block size can prevent issues with unaligned I/O and is part of a larger configuration strategy for optimizing storage performance3.
* The Reference Architecture Guide for Dell EMC XtremIO documents mention using a block size of 64 KB for database data and log file drives after the installation of the operating system in the VMs, for Windows and RHEL operating systems respectively12. This suggests that the block size is an important consideration for performance tuning in these environments.

NEW QUESTION # 56
Which performance monitoring utility can be used for data gathering on Windows?

A. resxtop
B. sar
C. iostat
D. PerfMon

Answer: D

Explanation:
ThePerformance Monitor (PerfMon)is a built-in tool in Windows that allows users to monitor and analyze the performance of their system in real time123456.It provides a visual display of built-in Windows performance counters, either in real time or as a way to review historical data7. You can add performance counters to Performance Monitor by dragging and dropping, or by creating custom Data

NEW QUESTION # 57
An XtremlO administrator has a cluster consisting of two X2 X-Bricks in production. The administrator plans to expand the cluster to a total of four X2 X-Bricks.
How many snapshots and volumes can the newly upgraded XtremlO cluster support?

A. 0
B. 1
C. 2
D. 3

Answer: B

Explanation:
An XtremIO cluster's ability to support snapshots and volumes scales with the number of X-Bricks in the cluster.According to the documentation, an XtremIO X2 cluster can support up to 32K objects (root volumes + snapshots) per cluster1. Therefore, with the expansion from two to four X2 X-Bricks, the cluster would be able to support up to 32,768 snapshots and volumes.
References:
* The Dell EMC XtremIO X2: Next-Generation All-Flash Array document states the infrastructural scale supporting up to 32K objects per cluster1.
* Additional information on the scalability and performance of XtremIO X2 clusters can be found in the Introduction to XtremIO X2 Storage Array document2.

NEW QUESTION # 58
......

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